Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adrienne Silva, OT

Occupational Therapist in Waltham, MA · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1336645639

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Registry record

Entity type Individual (Type 1)

Name Adrienne Silva

Credential OT

Sex Female

Practice address 303 Wyman St Ste 300, Waltham, MA, 02451

Phone (877) 407-3422

Fax (877) 407-4329

Enumeration date Apr 4, 2018

Last updated in NPPES Apr 4, 2018

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 11173 (MA) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Adrienne Silva practice?

The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Adrienne Silva?

The National Provider Identifier (NPI) for Adrienne Silva is 1336645639, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-04.